1.0 - Introduction 1.1 - Description PRESYS DMY-2030 Light Indicator is able to monitor one universal standard input and accepts direct connection of thermocouples, RTD, current (mAdc) and voltage (mVdc, Vdc). Thermocouples and RTD inputs are linearized automatically by tables stored in EPROM memory.
Note 1 - The input type, indication and relay usage as alarms are, among other things, items that the user can program through the front keys (if wanted, specify these information so that all the configuration can be made by PRESYS). Note 2 - Other hardware and software features can be available under previous consult.
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PRESYS Instruments DMY-2030 Light This code defines a DMY-2030 indicator with one SPDT relay which can be used as high and low alarm, 90 to 240Vac or 130 to 340Vdc electric power supply, protected field usage. Introduction Page 3...
PRESYS Instruments DMY-2030 Light 1.3 - Technical Specifications Input: One input configurable for thermocouple (J, K, T, E, R, S, under ITS - 90), Pt-100 RTD under DIN 43760, 4 to 20mA, 0 to 55mVdc, 1 to 5Vdc, 0 to 10Vdc. 250 input impedance for mA, 10M for 5Vdc and 2M...
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PRESYS Instruments DMY-2030 Light Outputs: One 4 to 20mA, 1 to 5Vdc or 0 to 10Vdc analog retransmitter optional module galvanically isolated up to 300Vac from power supply and input. SPDT relays for alarm rated for 3A at 220Vac or up to 10A at 220Vac under order (in this case, the alarm module is not plugged to a connector, but soldered to the board).
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PRESYS Instruments DMY-2030 Light Cold junction compensation: 2.0C at range from 0 to 50C ambient temperature. Thermal stability: 0.005% / C of span with reference of 25C ambient temperature. Power supply: Universal 90 to 240Vac or 130 to 340Vdc (any polarity), 10W nominal;...
Fig. 2 - Dimensional drawing, panel cutout and side view 2.2 - Electrical Installation DMY-2030 Light Indicator may be powered by voltage between 90 and 240Vac or 130 to 340Vdc, any polarity. Remember that the internal circuit is powered whenever the instrument is connected to the external power supply.
PRESYS Instruments DMY-2030 Light Input and output signals must be connected to the instrument only when it is turned off. Figure 3 shows the instrument rear terminals for connection of power supply, ground, communication, process input and output signals.
PRESYS Instruments DMY-2030 Light 2.3.1 - Thermocouple Input Connect the thermocouple to terminals 2(+) and 3(-) as shown in figure 4. In order to reduce the error due to cold junction compensation, use thermal paste in the rear (from the terminals where the thermocouple is connected to the cold junction sensor).
PRESYS Instruments DMY-2030 Light 2.3.3 - Milliampere Input The 4-20 mA current signal is applied to terminals 5(+) and 6(-). The current signal can be generated by a transmitter with an external power supply. In case of using the 24Vdc internal voltage source from the Indicator to power a two-wire transmitter, the current is received only by terminal 5(+).
PRESYS Instruments DMY-2030 Light 2.3.4 - Volt or Millivolt Input 0 to 55mVdc or 0 to 5 Vdc must be applied to terminals 2 (+) and 3 (-). 0 to 10Vdc must be applied to terminals 4(+) and 6(-). The connections are shown in figure 7.
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PRESYS Instruments DMY-2030 Light (*) Position of relay contacts when the Indicator is powered on and in non-alarm condition. When the Indicator is powered off or in alarm condition, the position of the relays changes. Fig. 8 - Output Connection...
Instruments DMY-2030 Light 2.6 - Communication DMY-2030 Light Indicator communicates with computers through RS-232 or RS-485 and with use of a MODBUS protocol communication software, when the optional communication module is installed and the communication parameters are configured. Specific information on communication and signal connection is described in the communication manual.
Instruments DMY-2030 3.0 - Operation 3.1 - Normal operation DMY-2030 Light Indicator has two modes of operation: normal operation and configuration mode. During normal operation, the Indicator monitors the inputs, verifies alarm conditions and activates the outputs when necessary.
PRESYS Instruments DMY-2030 Light 3.2 - Configuration In order to access the configuration mode the operator is required to provide a password which avoids a non-authorized person to change any critical parameters of the process. So, when UP is pressed while “Conf” is shown in the normal operation mode, the PASS warning is displayed and the user should press the UP, DOWN and ENTER keys (exactly in this order) to access the configuration levels.
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Presys Light Instruments DMY-2030 In order to move through the levels and access the parameters of any one of them, use the front panel keys which have the following functions: Description ENTER Enters the level Moves to higher levels...
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PRESYS Instruments DMY-2030 Light Level 1 - Input The input sensors, described in table 1 of section 1.3 on Technical Specifications, are configured according to the parameters of the Input level shown below: Fig. 12 - INPUT level options...
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Presys Light Instruments DMY-2030 The table below refers to the ranges of the parameters shown in figure 12. Mnemonic Parameter Range Factory Units Value display indication ENG LOW associated to the input -1009 to 20019 zero scale display indication...
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In this case, choosing the UP option for this parameter activates the high-alarms and the DOWN option activates the low- alarms. UNITS - selects °C or °F for temperature indication. NOTE: DMY-2030 Light INDICATOR PRESENTS ALREADY COLD JUNCTION COMPENSATION FOR THERMOCOUPLE MEASUREMENT. Operation Page 20...
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Presys Light Instruments DMY-2030 Levels 2 and 3 - Alarms The Indicator accepts up to two alarm devices: relays 1 and 2. The alarm condition can also be visualized by the couple of leds on the front panel, LED 1 and LED 2, corresponding to alarm 1 and 2, respectively.
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PRESYS Instruments DMY-2030 Light DELAY - causes the relay to be activated only after a certain time interval defined by the user. Figure 16 below illustrates the delay operation for a high-alarm. Fig.16 - Relay with delay The table below refers to the ranges of the parameters shown in figure 15.
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Presys Light Instruments DMY-2030 Relay modules are provided with circuits for eliminating electrical arch (RC snubber). The snubbers are put in parallel with the relay contacts, by placing the jumpers J1 and J2 localized on the back of the relay board. When the jumpers are not placed, the relay contacts are kept without snubbers.
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PRESYS Instruments DMY-2030 Light Level 4 - Output Fig. 18 - OUTPUT level options The table below refers to the ranges of the parameters shown in figure 18. Mnemonic Parameter Range Factory Units Value display indication ENG LOW associated to the...
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Light Instruments DMY-2030 Level 5 - Calibration DMY-2030 Light Indicator is accurately calibrated in factory and does not need periodic calibration in normal conditions. When calibration is required, follow the procedure below. Disconnect the process signals of I/O terminals.
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PRESYS Instruments DMY-2030 Light Input Calibration Enter level 5 of Calibration and provide the password. The password for entering this level is number 5. Select the input type to be calibrated. The display shows the mnemonics related to the references required for the calibration process. Apply the reference which corresponds to the mnemonic on the display and press ENTER (see the Connection Diagram).
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Presys Light Instruments DMY-2030 Enter level 5 of Calibration, choose the type of output (4 to 20mA, 1 to 5V or 0 to 10V) and press ENTER. The display will show the mnemonic related to the first point of calibration. There are only two points for output calibration.
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